public class Test02 {
    public static void main(String[] args) {
        /*System.exit(0);*/
        System.out.println("看看我执行了吗");
        Long l=System.currentTimeMillis();
        System.out.println(l);
        int[] arr1={1,2,3,4,5,6,7,8,9,10};
        int[] arr2=new int[10];
        System.arraycopy(arr1,0,arr2,0,10);
        for(int i=0;i<arr2.length;i++){
            System.out.println(arr2[i]);
        }



    }
}
